Noise reduction structure for toilet tank

ABSTRACT

A noise reduction structure for a toilet tank includes a pressure-assisted flush water tank, a fluid input device, a guide pipe, and a stop member. The fluid input device is disposed on a top of the pressure-assisted flush water tank. The fluid input device is configured to input a fluid having water and air to the pressure-assisted flush water tank. The guide pipe has an input end communicating with an output end of the fluid input device. The stop member includes a stop plate opposite to an output end of the guide pipe. After being stopped by the stop plate, the fluid spreads and flows toward an edge of the stop plate.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The present invention relates to a pressure-assisted toilet flushing system, and more particularly to a noise reduction structure for a toilet tank.

2. Description of the Prior Art

A pressure-assisted toilet flushing system includes a pressure-assisted flush water tank. Using the pressure energy accumulated by the compressed air in the pressure-assisted flush water tank, the water in the pressure-assisted flush water tank generates a strong flushing force when it is discharged, so as to flush the toilet bowl. The pressure-assisted toilet flushing system uses pressure energy to discharge water, so the flushing force is stronger, thereby providing a better flushing effect with less water. The pressure-assisted toilet flushing system is energy-saving and environmentally friendly.

However, the pressure-assisted toilet flushing system is prone to generate relatively large noise in the beginning of filling water, resulting in poor user experience.

SUMMARY OF THE INVENTION

The primary object of the present invention is to provide a noise reduction structure for a toilet tank, which is used to eliminate the noise when water flows into the pressure-assisted flush water tank and improve the user experience.

In order to achieve the foregoing object, the technical solutions of the present invention are described below.

A noise reduction structure for a toilet tank comprises a pressure-assisted flush water tank, a fluid input device, a guide pipe, and a stop member. The fluid input device is disposed on a top of the pressure-assisted flush water tank. The fluid input device is configured to input a fluid having water and air to the pressure-assisted flush water tank. The guide pipe has an input end communicating with an output end of the fluid input device. The stop member includes a stop plate opposite to an output end of the guide pipe. After being stopped by the stop plate, the fluid spreads and flows toward an edge of the stop plate.

The fluid input device includes a valve body disposed on the top of the pressure-assisted flush water tank, a one-way air valve, and a Venturi nozzle. The valve body has a water inlet, an air inlet, and a fluid outlet. The one-way valve is disposed in the air inlet. The Venturi nozzle is disposed in the fluid outlet.

The guide pipe is arranged vertically.

The input end of the guide pipe is integrally connected to an inner top wall of the pressure-assisted flush water tank.

The input end of the guide pipe is flared upward.

The stop member further includes an end socket that is detachably connected to the output end of the guide pipe and a connecting piece connected between the stop plate and the end socket.

The end socket has a through hole for the guide pipe to pass therethrough and an engaging hook on an inner side of the through hole. The output end of the guide pipe has an engaging groove matching with the engaging hook.

An upper surface of the engaging hook has a guide curved surface.

One end of the stop plate is integrally connected to an inner side wall of the pressure-assisted flush water tank. The stop member further includes a reinforcing rib integrally connected between a lower surface of the stop plate and the inner side wall of the pressure-assisted flush water tank.

A lower surface of the stop plate is integrally connected to an inner bottom wall of the pressure-assisted flush water tank through a support post.

Through the above solution, in the present invention, the stop plate is disposed at the output end of the guide pipe to provide a buffering effect for the fluid and to reduce the speed of the fluid. After being stopped by the stop plate, the fluid spreads to the edge of the stop plate to further reduce the impact force on the pressure-assisted flush water tank, thereby reducing or even eliminating the noise when the fluid flows into the pressure-assisted flush water tank and improving the user experience.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view according to a first embodiment of the present invention;

FIG. 2 is a partial exploded view according to the first embodiment of the present invention;

FIG. 3 is a cross-sectional view according to the first embodiment of the present invention;

FIG. 4 is a cross-sectional view according to a second embodiment of the present invention; and

FIG. 5 is a cross-sectional view according to a third embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings.

The present invention discloses a noise reduction structure for a toilet tank, comprising a pressure-assisted flush water tank 1, a fluid input device 2, a guide pipe 3, and a stop member 4.

The fluid input device 2 is disposed on the top of the pressure-assisted flush water tank 1. The fluid input device 2 is configured to input a fluid having water and air to the pressure-assisted flush water tank 1.

The guide pipe 3 has an input end communicating with an output end of the fluid input device 2.

The stop member 4 includes a stop plate 41 opposite to an output end of the guide pipe 3. After being stopped by the stop plate 41, the fluid spreads and flows toward the edge of the stop plate 41.

FIGS. 1 to 3 illustrate a first embodiment of the present invention.

The pressure-assisted flush water tank 1 may be an integral tank, or the upper portion of the tank, that is, the upper half of the pressure-assisted flush water tank 1. FIG. 1 and FIG. 2 show the upper half of the tank.

The top of the pressure-assisted flush water tank 1 has a mounting groove 11 matching the contour of the fluid input device 2, so as to position and fit the fluid input device 2.

The fluid input device 2 utilizes the “Venturi effect” to realize air intake. The fluid input device 2 includes a valve body 21 disposed on the top of the pressure-assisted flush water tank 1, a one-way air valve 22, and a Venturi nozzle 23. The valve body 21 has a water inlet 211, an air inlet 212 and a fluid outlet 213. The water inlet 211 is in communication with a water supply control device of a pressure-assisted toilet flushing system. The one-way valve 22 is disposed in the air inlet 212. The Venturi nozzle 23 is disposed in the fluid outlet 213. When the water supply control device is turned on, the water flow into the water inlet 211 and flows out of the fluid outlet 213 from the Venturi nozzle 23 to flow into the guide pipe 3. Due to the “Venturi effect” of the Venturi nozzle 23, the water flow is accelerated to flow into the guide pipe 3. Negative pressure is generated in the valve body 21, the atmospheric pressure pushes the one-way air valve 22 to open, and the air enters the air inlet 212 and flows to the guide pipe 3 together with the water flow to supplement air to the pressure-assisted flush water tank 1 to achieve the purpose of pressure storage.

The guide pipe 3 is arranged vertically to correspond to the flow direction of the fall of the fluid, reducing the energy loss in the process of fluid falling Before the fluid is in contact with the stop plate 41, the flow rate is kept as high as possible, so as to ensure the air intake and pressure storage of the pressure-assisted flush water tank 1.

The input end of the guide pipe 3 is integrally connected to the inner top wall of the pressure-assisted flush water tank 1. That is to say, the guide pipe 3 is integrally formed with the pressure-assisted flush water tank 1, which can ensure the connection strength of the guide pipe 3 and the pressure-assisted flush water tank 1, and prevent the guide pipe 3 from falling off due to high pressure in the process of filling water.

Further, the input end of the guide pipe 3 is flared upward, so as to match with the output end of the fluid input device 2 (that is, the Venturi nozzle 23).

In addition to the stop plate 41, the stop member 4 further includes an end socket 42 that is detachably connected to the output end (i.e., the lower end) of the guide pipe 3 and a connecting piece 43 connected between the stop plate 41 and the end socket 42. Both ends of the connecting piece 43 are integrally connected to the edges of the stop plate 41 and the end socket 42, respectively.

Further, the end socket 42 has a through hole 421 for the guide pipe 3 to pass therethrough and an engaging hook 422 on the inner side of the through hole 421. The output end of the guide pipe 3 has an engaging groove 31 matching with the engaging hook 422. The engaging hook 422 of the end socket 42 is engaged in the engaging groove 31 of the guide pipe 3, so that the end socket 42 is connected to the guide pipe 3. That is, the stop plate 41 is fixed to the output end of the guide pipe 3 to ensure that the stop plate 41 will not move under the impact of the water flow, thereby ensuring its functional stability.

In addition, the upper surface of the engaging hook 422 has a guide curved surface 423, so that the upper end of the end socket 42 is partially flared. It is convenient for the guide pipe 3 to enter the end socket 42, so as to improve the convenience and efficiency of product assembly.

Referring to FIG. 3 , the working principle of the first embodiment is described below.

Through the stop plate 41 connected to the output end of the guide pipe 3, when the water flows out of the guide pipe 3, it is stopped by the stop plate 41 to reduce the speed and play a buffer role, thereby reducing noise.

FIG. 4 illustrates a second embodiment of the present invention.

The main difference between the second embodiment and the first embodiment is the specific structure of the stop member 4.

In the second embodiment, one end of the stop plate 41 is integrally connected to the inner side wall of the pressure-assisted flush water tank 1, so that the stop plate 41 and the pressure-assisted flush water tank 1 are kept in a fixed position.

Further, the stop member 4 further includes a reinforcing rib 44 integrally connected between the lower surface of the stop plate 41 and the inner side wall of the pressure-assisted flush water tank 1, so as to improve the strength of the stop plate 41.

FIG. 5 illustrates a third embodiment of the present invention.

The main difference between the third embodiment and the first embodiment mainly is the specific structure of the stop member 4.

In the third embodiment, the lower surface of the stop plate 41 is integrally connected to the inner bottom wall of the pressure-assisted flush water tank 1 through a support post 45, so that the stop plate 41 and the pressure-assisted flush water tank 1 are kept in a fixed position.

With the above solution, in the present invention, the stop plate 41 is disposed at the output end of the guide pipe 3 to provide a buffering effect for the fluid and to reduce the speed of the fluid. After being stopped by the stop plate 41, the fluid spreads to the edge of the stop plate 41 to further reduce the impact force on the pressure-assisted flush water tank 1, thereby reducing or even eliminating the noise when the fluid flows into the pressure-assisted flush water tank 1 and improving the user experience.

Although particular embodiments of the present invention have been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the present invention. Accordingly, the present invention is not to be limited except as by the appended claims. 

What is claimed is:
 1. A noise reduction structure for a toilet tank, comprising a pressure-assisted flush water tank, a fluid input device, a guide pipe, and a stop member; the fluid input device being disposed on a top of the pressure-assisted flush water tank, the fluid input device being configured to input a fluid having water and air to the pressure-assisted flush water tank; the guide pipe having an input end communicating with an output end of the fluid input device; the stop member including a stop plate opposite to an output end of the guide pipe, the fluid spreading and flowing toward an edge of the stop plate after being stopped by the stop plate.
 2. The noise reduction structure as claimed in claim 1, wherein the fluid input device includes a valve body disposed on the top of the pressure-assisted flush water tank, a one-way air valve, and a Venturi nozzle; the valve body has a water inlet, an air inlet, and a fluid outlet; the one-way valve is disposed in the air inlet; the Venturi nozzle is disposed in the fluid outlet.
 3. The noise reduction structure as claimed in claim 1, wherein the guide pipe is arranged vertically.
 4. The noise reduction structure as claimed in claim 1, wherein the input end of the guide pipe is integrally connected to an inner top wall of the pressure-assisted flush water tank.
 5. The noise reduction structure as claimed in claim 4, wherein the input end of the guide pipe is flared upward.
 6. The noise reduction structure as claimed in claim 1, wherein the stop member further includes an end socket that is detachably connected to the output end of the guide pipe and a connecting piece connected between the stop plate and the end socket.
 7. The noise reduction structure as claimed in claim 6, wherein the end socket has a through hole for the guide pipe to pass therethrough and an engaging hook on an inner side of the through hole; the output end of the guide pipe has an engaging groove matching with the engaging hook.
 8. The noise reduction structure as claimed in claim 7, wherein an upper surface of the engaging hook has a guide curved surface.
 9. The noise reduction structure as claimed in claim 1, wherein one end of the stop plate is integrally connected to an inner side wall of the pressure-assisted flush water tank; the stop member further includes a reinforcing rib integrally connected between a lower surface of the stop plate and the inner side wall of the pressure-assisted flush water tank.
 10. The noise reduction structure as claimed in claim 1, wherein a lower surface of the stop plate is integrally connected to an inner bottom wall of the pressure-assisted flush water tank through a support post. 